If someone describes a white person, especially a lower class American from the countryside, as a redneck, they disapprove of that person because they think he or she is uneducated and has strong, unreasonable opinions.
[mainly US, informal, disapproval]
A large Texan redneck was shouting obscenities at Ali.
redneck in British English
(ˈrɛdˌnɛk) derogatory
noun
1.
(in the southwestern US) a poor uneducated White farm worker
2.
a person or institution that is extremely reactionary
adjective
3.
reactionary and bigoted
redneck laws
redneck in American English
(ˈrɛdˌnɛk), ˈred-ˌneck (ˈrɛdˌnɛk)
US
noun
Slang
a poor, white, rural Southerner, often, specif., one regarded as ignorant, bigoted, violent, etc.
often a derogatory term
Word origin
from the characteristic sunburned neck acquired in the fields by farm laborers